Abstract: A gas turbine group is provided with at least one cooling apparatus for cooling the working medium before and/or during the compression. The cooling power of the cooling apparatus can be adjusted by suitable means. A controller controls the cooling power of the cooling apparatus as a function of a control deviation in the useful power of the gas turbine group. The cooling controller interacts with other controllers of the gas turbine group in such a way that the gas turbine group is itself always operated at least close to its full load operating state. In this context, it is preferable for the inlet guide vane row of the compressor to be maximally open, and for the hot-gas temperature on entry into the turbines to be controlled so that it is constantly at an upper limit value.

Abstract: A gas turbine group is provided with at least one cooling apparatus for cooling the working medium before and/or during the compression. The cooling power of the cooling apparatus can be adjusted by suitable means. A controller controls the cooling power of the cooling apparatus as a function of a control deviation in the useful power of the gas turbine group. The cooling controller interacts with other controllers of the gas turbine group in such a way that the gas turbine group is itself always operated at least close to its full load operating state. In this context, it is preferable for the inlet guide vane row of the compressor to be maximally open, and for the hot-gas temperature on entry into the turbines to be controlled so that it is constantly at an upper limit value.

Abstract: A method of operating a gas-turbine power plant, having a gas-turbine plant (1) in which an oxygen-containing gas is drawn in, compressed and fired and, after passing through a turbine stage, is fed as discharging hot gas (8) to a waste heat boiler (4), from which the cooled exhaust gas (9) is fed to an outlet (10) and then to the free atmosphere. A specific reduction in the flow velocity with which the exhaust gas (9) flows through the outlet (10) is effected in the region of the latter, with a simultaneous pressure increase downstream in the outlet (10), and in that the pressure conditions occurring inside the outlet (10) are transmitted free of losses between the gas turbine (1) and the outlet (10) via a gas-tight flow path of the hot and exhaust gases (8; 9).

Abstract: A method of operating a gas-turbine power plant is described, having a gas-turbine plant (1) in which an oxygen-containing gas is drawn in, compressed and fired and, after passing through a turbine stage, is fed as discharging hot gas (8) to a waste heat boiler (4), from which the cooled exhaust gas (9) is fed to an outlet (10) and then to the free atmosphere. The invention is characterized in that a specific reduction in the flow velocity with which the exhaust gas (9) flows through the outlet (10) is effected in the region of the latter, with a simultaneous pressure increase downstream in the outlet (10), and in that the pressure conditions occurring inside the outlet (10) are transmitted free of losses between the gas turbine (1) and the outlet (10) via a gas-tight flow path of the hot and exhaust gases (8; 9).

Abstract: A gas turbine plant includes at least one compressor compressing intake air, at least one component for heat supply heating the intake air compressed by the compressor, at least one gas turbine using as a working medium the hot air from the component for heat supply, and at least one generator coupled to the gas turbine. A cooling device is provided which permits the cooling of at least a portion of the intake air and/or a portion of partially compressed intake air within the at least one compressor.

Abstract: A method of operating a gas-turbine power plant is described, having a gas-turbine plant (1) in which an oxygen-containing gas is drawn in, compressed and fired and, after passing through a turbine stage, is fed as discharging hot gas (8) to a waste heat boiler (4), from which the cooled exhaust gas (9) is fed to an outlet (10) and then to the free atmosphere. The invention is characterized in that a specific reduction in the flow velocity with which the exhaust gas (9) flows through the outlet (10) is effected in the region of the latter, with a simultaneous pressure increase downstream in the outlet (10), and in that the pressure conditions occurring inside the outlet (10) are transmitted free of losses between the gas turbine (1) and the outlet (10) via a gas-tight flow path of the hot and exhaust gases (8; 9).

Abstract: In a gas turbine plant with at least one compressor (1, 2) compressing intake air (10), with at least one component for heat supply (8) heating the intake air (12) compressed by the compressor (1, 2), with at least one gas turbine (3) using as a working medium the hot air (13) from the component for heat supply (8), and with at least one generator (5) coupled to the gas turbine (3), cooling means (20, 21) being present which permit the cooling of at least a portion of the intake air (10) and/or a portion of partially compressed intake air (11) within the at least one compressor (1, 2), cooling of the components is attained which protects materials and is economical and optimum, in that the cooling means (20, 21) is suitable for cooling at least a portion of the air mass flow before or within the compressor (1, 2) such that the air temperature and/or component temperature at critical places (30-38), such as at the outlet of the compressor (1, 2) or at another component of the gas turbine plant, does not exceed

Abstract: A turbomachine, in particular a gas turbine, is in the traditional manner provided with air cooling of the components that are subject to a high thermal stress. The cooling system (21, 31, 41) is provided with elements through which another medium (25, 35, 45), for example water or steam, can be added to the cooling system during peak demand. This medium displaces cooling air (26, 36, 46) from the cooling system, the air being then available additionally in a heat generator (2, 4). This means that more fuel (12, 13) can be added without increasing the hot gas temperature (T.sub.1, T.sub.3) at the turbine inlet (301, 501), and the power is increased. The quantity of the medium added to the cooling system is controlled by control elements (24, 34, 44) as a function of a control deviation (P.sub.set -P.sub.act) of the power.